Modifying Ls1 Wiring Harness

I have a 2004 ES330 in the manner of a hestitation problem. It is good from a full stop but next I go going on for turns upon onto highway ramps, next I sadden the accellarator (sp?) it hesitates for 2 seconds since reving up. I ve taken it to a mechanic and he says it is normal. I have an 2003 Avalon following the thesame engine and it jumps off the begin and has no hesitation. Mechanic s Assistant: Will the headlights twist on? Is the battery sufficiently charged? With or without headlights on. Relatively new battery. Mechanic s Assistant: What is the model of your 04 Lexus? ES330 Mechanic s Assistant: Are you fixing your vehicle yourself? What have you tried suitably far? I ve cleaned the MAF sensor. Checked for links in the intake. once I put my Turbo OBDII app on, anything seems fine except that the TPS stays constant just about 30%. This is a drive-by-wire model for that reason it has not throttle cable or usual TPS. I give a positive response the TPS is integrated once the throttle controller/motor. Mechanic s Assistant: all else you desire the mechanic to know past I be close to you? No, I guess that is it.

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Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me tell you a tiny more about the burden history. It currently has a master tech endorsed idle ventilate govern valve and tps installed. without disturbing anything, the last (used) ecu and my original, would govern in the car without this symptom.

once I start the car, the engine surges in the works between 1200 and 2000 rpm incite and forth. I changed the IAC and the TPS like no fine-tune in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to accustom yourself the idle speed screw to subjugate the rpm and it would hold for a while. Now, the engine is for all time surging to the reduction where I cannot steer it for clock radio of damage to the drive train. Any experienced solution?

Photo Schematics for modifying ls1 wiring harness

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